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H. J. GREEN. MANTLE RING FORMING MACHINE.

APPLICATION FILED MAR-6,1920. 1,345,845, Patented July 6, 1920.

2 SHEETSSHEET l.

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1 a g 5 a g 50" a a a H. J. GREEN.

MANTLE RING FORMING MACHINE.

APPLICATION FILED MAR. 6, I920.

1,345,845. Patent d July 6, 1920.

2 SHEETS-SHEET Z.

- III I ST TS HARRY JACKSON GREEN, OF SEBRING, OHIO.

MANTLE-RING-FORMING MAGHINE.

Application filed March 6, 1920.

bodiment of my invention. I desire it to be understood that I may make such changes in construction, combination and arrangement of parts, materials, dimensions, ct cetera, as may prove expedient and fall within the scope of the appended claims.

Referring to the drawings hereto attached:--

Figure 1 is a view in elevation, parts being broken away and parts in section, of a machine particularly constructed for demonstrating the application of the invention, the actuating means being omitted.

Fig. 2 is a top plan view of the machine,

partsbeing broken away and parts being in section on the line 22 of Fig. 1.

Fig. 3 is a sectional detail on the line 3-3 of Fig. 2.

Corresponding and like parts are referred to in the following description and indicated in the several views of the drawings by like reference characters.

The machine embodies a suitable frame work which, as shown comprises an upper plate 1 and a lower plate 2, and suitable tie rods or bolts 3. A plate 1 is placed upon the plate 1 and is secured thereto by the fastening means The plate at is recessed in its under side and constitutes a casing for receiving certain parts of the machine which will be described more in detail hereinafter. A vertical opening is formed centrally in the plates 1 and 2 and is adapted to receive the working parts of the complemental dies.

A puncho is disposed above the plate or casing 4 and its lower portion is adapted to enter the casing and constitutes the main die, which forms the upper part of the mantle ring or holder. As shown most clearly in Figs. 1 and 3, the head provided as a part Specification of Letters Patent.

Patented July 6, 1920.

Serial No. 363.814.

of the punch 5 is stepped and otherwise formed to engage the casing and limit the downward movement of the punch. A recess 6 is formed centrally in the lower face of the punch and is adapted to receive the upper end of the mandrel 7 or a part ap plied thereto. The punch 5 is adapted to have a vertical movement imparted thereto and is mounted so as to move in a predetermined path. Any suitable treadle mechanism may be employed for operating the punch and as such mechanism is well understood in the art and constitutes no part of the present invention it is not deemed necessary to illustrate or refer to the same in detail. The mandrel 7 is secured at its lower end to the plate 2 and occupies a central position and is of a length so that its upper end extends through the top plate 1 and projects into the recessed portion of the plate or casing 1. The mandrel is progressively reduced in its length forming a plurality of annular shoulders .8, 9, and 10 which constitute stops to limit the downward movement of certain parts. The mandrel is in line with the punch. A sleeve 11 is loosely mounted upon the upper portion of the mandrel above the shoulder 8 and is limited in its downward movement by said shoulder. The lower end of the sleeve 11 is formed with an outer annular enlargement 12 which performs a dual func tion as will appear more fully hereinafter.

The sleeve 11 extends beyond the shoulder 9 of the mandrel and enters the opening formed centrally of the top plate 1. A tip 13 is fitted to the upper end of the sleeve 11 and constitutes a renewable section thereof. The tip 13 receives the wear and is adapted to be replaced when worn or otherwise rendered unfit for further effective service, thereby obviating the necessity for providing a new sleeve which would result, if the part 13 were formed as a part of the sleeve 11 instead of separately therefrom. The upper and lower portions of the tip 13 are exteriorly reduced thereby resulting in the formation of an annular enlargement 14: which snugly fits within the opening of the plate 1 and comes flush with the outer side of the sleeve 11. The tip 13 consists of a short tubular section and its upper reduced portion is adapted to enter the lower face of the head of the punch as shown most clearly in Fig. 1. A collar 15 fits snugly within the mantle ring or holder. An expansible helical spring 18 is mounted upon the upper portion of the mandrel, comprised between the shoulders 9 and 10 and 1s supported upon the shoulder 9 and engages the lower end of the collar 15 and normally tends to press said collar upward. into engagement with the lower end of the cap '17. An expansible helical spring 19 is mounted upon the lower portion of the mandrel and rests upon the bottom plate 2 and normally exerts an upward pressure on the sleeve 11.

Slides 20, two in number are disposed upon opposite sides of the upper portion of the mandrel and are located in the recess of the plate or casing 4. The slides 20 are adapted to have a lateral movement imparted thereto. The mold space 21 is formed between the inner edges of the slides 20, the outer side of the tip 13, the lower end of the punch and shouldered portions of the tip 13 and slides 20 all as indicated most clearly in Fig. 1. i The outer edges of the slides 20 are beveled from opposite sides. As a result of having the outer edges of the slides 20 beveled from opposite sides, they present a l -form. The upper beveled portions 22 constitute cam surfaces whereby the slides are positively moved inwardly.

The mechanism for positively operating the slides 20 in both directions comprises vertically disposed rods or bars 23, which are adapted to operate through openings formed in the top andbottom, plates 1 and 2. A yoke 24 connects the lower ends of the bars 23 and this yoke is adapted to be eonnecte'd with a suitable treadle mechanism, not shown, whereby the bars 23 are moved vertically. The upper ends of the rods or bars 23 are adapted to enter the recessed portion of the plate or casing 4. Recesses 25 are formed in the inner sides of the upper ends of the bars 23 and these recesses correspond with the tapered outline thereof, above the recesses 25 engage the outer edges of the slides 20 and hold the latter at the limit of their inward movement. At this time the mandrel in the mold space 21 is subjected to pressure by downward movement of the punch or die 5. The slides 20 are moved apart by means of companion bars 27 which are secured to opposite sides of the rods or bars 23. The bars 27v extend along opposite sides of the sleeve 11 and are formed centrally with a vertical extension 28 which is tapered at its upper end. The tapered ends of the vertical extensions 28 are adapted to pass upwardly between the inner edges of the slides 20 and press the same apart when the bars 23 are moved upwardly. The parts are so disposed that when the inclined walls 2601i the recesses 25 clear the beveled or inclined edges 22 of the slides, the tapered ends. of the projections 28 enter the space. formed between the inner edges of the slides 20 so that as the bars 23 continue to move upwardly, the slides 20 ride upon the inclined edges of the tapered ends of the extensions 28 and are moved outwardly thereby, the outer tapered portions of the slides entering the recesses 25. downward the tapered ends of the projections 28 are withdrawn from between the slides 20' and at the same time the slides are moved inward by the inclined walls 26 riding upon the inclined edges 22. The lower portions of the bars 23 are threaded and receive nuts 29 and 29 whereby provision is had for properly adjusting the bars 23 so as to operate properly. Stops 30 are mounted upon the bottom plate 2 and consist of sleeves through which the bars 23 pass. When the bars 23 are at the limit of their downward movement, the nuts 29 come in contact with the upper ends of the sleeves 30.

l/Vhen the plunger or die 5 is at the limit of its downward movement, the collar 15 is in contact with the shoulder 10 and the sleeve 11 is in contact with the shoulder 8, both springs 18 and 19 being compressed. When the plunger or die 5 is elevated the collar 15 and the sleeve 11 are pressed upwardly by the respective springs 18 and 19. When the plunger is elevated the material is supplied tothe mold. Downward movement of the plunger compresses the material in the mold. When the plunger is elevated and the bars 23 move upwardly the slides 20 are pressed laterally apart, thereby releasing the article which is moved upwardly by the combined action of the sleeve 11 and collar 15 as will be readily understood.

Having thus "fully described my invention what I claim as new and'd'esire to secure by Letters Patent, is

1. In a molding apparatus of the character specified, a mandrel, a collar mounted on WVhen the bars 23 are moved the mandrel and having a limited movement thereon, a sleeve encircling the mandrel and collar, and a die co-acting with the mandrel and collar and adapted to move the latter in one direction.

2. In molding apparatus of the character specified, a mandrel, a collar mounted on the mandrel and having a limited movement, a spring on the mandrel for moving the collar outwardly, a sleeve encircling the collar and spring, and a plunger co-acting with the mandrel and collar to move the latter against the tension of the spring.

8. In molding apparatus of the character specified, a mandrel, a sleeve mounted on the mandrel and having a limited movement, and a renewable tip forming in effect a part of the sleeve.

4. In molding apparatus of the character specified, a mandrel having stepped portions, a collar mounted upon the mandrel, an expansible helical spring on the mandrel and normally pressing the collar upwardly, a sleeve mounted upon the mandrel and encircling the collar and the spring cooperating with the collar, and a spring on the mandrel normally tending to press the sleeve upwardly.

5. In molding apparatus of the character specified, a mandrel comprising stepped portions,'a cap secured to the end of the mandrel, a collar mounted on the upper end portion or" the mandrel and having a limited movement, an expansible spring mounted on the mandrel and normally pressing the collar upwardly, a sleeve on the mandrel inclosing the collar and the collar operating spring, and a spring on the mandrel normally pressing the sleeve upwardly.

6. In molding apparatus of the character specified, a stepped mandrel, a collar mounted on the mandrel and having a limited movement, an expansible helical spring mounted on the mandrel and normally exerting an upward pressure on the collar, a sleeve on the mandrel, a renewable tip 'forming an extension of the sleeve and encircling the collar and the collar operating spring,

and an enpansible helical spring on the col-- lar normally pressing the sleeve upwardly.

7. In molding apparatus of the character specified, laterally movable slides, longitudinally movable members having recesses to receive portions of the slides, parts 01. the slides and walls of the recesses being inclined to effect lateral movement of the slides.

8. In molding apparatus of the character specified, laterally movable slides, longitudinally movable members having recesses to receive portions of the slides, parts of the slides and walls of therecesses being in clined to effect lateral movement of the slides, and other members having a tapered portion to operate between the slides and move the same outwardly.

9. Molding apparatus of the character specified, comprising a mandrel, a punch in cooperative relation with the mandrel, slides at the sides of the mandrel and punch, longitudinally movable members having recesses to receive portions of the slides, corresponding parts of the slides and members being inclined to effect inward movement of the slides, and other members having tapered portions to come between the slides to effect an outward movement thereof.

10. Molding apparatus of the character specified, comprising alined mandrel and punch, laterally movable slides at the sides of the mandrel and punch, and having outer edge portions inclined, longitudinally movable members recessed to receive the outer edge portions of the slides, the recesses of the members having inclined walls to cooperate with the inclined edges of the slides, and other members movable with the longitudinally movable members and having tapered portions to come between the slides to press them apart.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY JACKSON GREEN.

\Vitnesses:

FRANK CURRY CHRISTY, VVM. E. HUGHES. 

